/*  抽屉事件*/
.drawer {
    position: fixed;
    top: 0;
    left: 80px;
    width: 300px;
    height: 700px;
    background: #f0f0f0;
    /* box-shadow: -2px 0 5px rgba(0,0,0,0.5); */
    padding: 20px;
    margin-top: 70px;
    
}
/* 打开按钮 */
.open-drawer{
    width: 25px;
    height: 80px;
    background: white;
    position: fixed;
    left: 92px;
    top: 330px;
    /* 上右下左 */
    border-radius: 0 20px 20px 0;
    background: orange;
    border: none;
    color: white;
    font-size: 25px;
}
/* 关闭按钮 */
.close-drawer{
    width: 25px;
    height: 80px;
    background: white;
    position: fixed;
    left: 420px;
    top: 330px;
    /* 上右下左 */
    border-radius: 0 20px 20px 0;
     background: orange;
     border: none;
       color: white;
    font-size: 25px;
}